r-r-12=0

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Solution for r-r-12=0 equation: 


Simplifying
r + -1r + -12 = 0

Reorder the terms:
-12 + r + -1r = 0

Combine like terms: r + -1r = 0
-12 + 0 = 0
-12 = 0

Solving
-12 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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